muddy Posted October 7, 2022 Share Posted October 7, 2022 Good evening, my forklift with a 750AH ish 48V lead acid is now having to be charged about twice a day, I have a CTEK 25A charger that i would like to try the reconditioning cycle on, I think I already know the answer but do I need to unbolt the cells the make 4x 12v batterys and try the cycle from there? I guess if I just wanted to charge I could simply 'jump' and two 6V cells but the recondition cycle would more than likely be upset by this. Lastly and particular idea why I shouldn't do this? The battery has the easy oil water system that is used every charge and was working over the last few years so I don't think I have a dry cell as such although I will obviously check this when I pull the box to do a 'manual' charge. Hopefully that all makes sense.... Quote Link to comment Share on other sites More sharing options...
pete3000 Posted October 8, 2022 Share Posted October 8, 2022 depends what voltage the charger is or is capable of. If it's 48v only then no. If it can do 12v you could do a 12v battery/s at a time to see if you have a weaker battery. Quote Link to comment Share on other sites More sharing options...
muddy Posted October 8, 2022 Author Share Posted October 8, 2022 Apologies the CTEK is a 12v 25a Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted October 8, 2022 Share Posted October 8, 2022 As Pete says, you can in theory just do a 12v bank at a time but I'm not sure how balanced that would end up making the cells - if you're got one or more weak ones in the chain it's bad news. Quote Link to comment Share on other sites More sharing options...
Escape Posted October 16, 2022 Share Posted October 16, 2022 If you can access individual cells or groups to get to 12V, you should be able to use the CTek to recondition them. In theory you don't even need to disconnect the cells being charged, as long as the battery is isolated from the forklift so no current can flow. I would do a health check on each 12V or 6V group to verify you don't have any bad cells and they're all in more or less the same state of health. Chances are one or more cells are causing the problem, maybe beyond the recon capabilities of even the CTek. Quote Link to comment Share on other sites More sharing options...
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